Edward G Holtgraver

Title: Edward G Holtgraver: Innovator of the Tight Shutoff Butterfly Valve

Introduction

Edward G Holtgraver is a notable inventor based in Pittsburgh, PA (US). He is recognized for his innovative contributions to valve technology, particularly in the design of butterfly valves. His work has significantly impacted the efficiency and reliability of pipeline systems.

Latest Patents

Holtgraver holds a patent for a Tight Shutoff Butterfly Valve. This invention features a butterfly valve assembly designed to be installed between pipeline flanges and secured by flange bolts. The assembly includes a cylindrical valve body ring with a cylindrical bore and face portions at each end. A resilient elastomer lining covers the bore and extends over a portion of the faces. The design incorporates a disk attached to a shaft that extends through the body ring and liner, positioned transverse to the axis of the body ring. The valve assembly is equipped with at least one face plate that has an opening circumscribing the portion of the liner extending over the face of the body ring.

Career Highlights

Holtgraver is associated with Fisher Controls Company, Inc., where he has contributed to advancements in valve technology. His work has been instrumental in enhancing the performance and functionality of various valve systems.

Conclusion

Edward G Holtgraver's innovative designs, particularly the Tight Shutoff Butterfly Valve, showcase his commitment to improving pipeline technology. His contributions continue to influence the industry and enhance operational efficiency.